单词:characteristic energy of electron swarms
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Teacher Li's special contribution 2 1.Help Help yourself to the snacks. 2.Skillful China needs more skillful English speakers. 3.Tell Please tell me something about your hometown. 4.Favorite Do you have a favorite Chinese food? 5.Restaurant This is a
Speaking effective American English [00:01.52]流利美语训练妙方 [00:03.03]Now let's talk about duration,the fourth characteristic of effective speech.Words,like musical notes,last for a specific period of time. [00:08.01]现在我们来看看说
春 节 对于全世界的华人来说,中国的新年是最重要的节日。人们也称它为春节或农历新年。 公历春节的确切日期每年都在变化。但是春节一般都在 1 月 1 日 到 2 月 19 日 之间。 在农历中,每
[00:03.15]第二单元 课文A [00:06.30]tax [00:08.07]税(款) [00:09.85]generally [00:11.31]一般地,通常,大体上 [00:12.77]federal [00:14.15]联邦的 [00:15.52]type [00:16.95]类型,种类 [00:18.39]salaried [00:19.87]拿薪水的,领工资的 [00:21.34]salary [00:22.71]
In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo
Locust Plague Swarms Madagascar Madagascar is in the midst of a locust plague and its threatening the food security of more than half the population. The U.N. Food and Agriculture Organization, the FAO, says it will take three years to bring the locu
本讲为2005年下半年新的教学内容,请对照教材听录音! Wind is the characteristic of spring. Women _being_ (be) the weaker and dependent sex , it is only natural that they should cr
OK, great, we smell vibrations. How? All right? 好吧,我们闻到的是震动。怎么闻到呢? Now when people ask this kind of question, they neglect something, which is that physicists are really clever, unlike biologists. 当人们问这个问
This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin
Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺
Locust Swarms Forming in West Africa Four countries in West Africa have been put on alert for the likely arrival of swarms of Desert Locusts. If uncontrolled, a small swarm can eat the same amount of food in one day as 35-thousand people. Locust swar
[0:0]efficiency效率,功效 [0:12.1950]elaborate elastic elbow elderly精心计划的,详尽的 橡皮图,松紧带 肘,肘部 较老的,年长的 [1:2.6076]elect electrical electron选举,推选 电的,电气科学的 电子 [1:41.1372]electronic elegant element elementary [2:36.2790]el
But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a
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Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom
The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen